import type { UmbValueSummaryApi } from '../extensions/value-summary-api.interface.js';
import type { UmbValueSummaryElement } from '../extensions/value-summary-element.interface.js';
import { UmbLitElement } from '../../lit-element/index.js';
export declare abstract class UmbValueSummaryElementBase<ValueType = unknown> extends UmbLitElement implements UmbValueSummaryElement<ValueType> {
    #private;
    set api(api: UmbValueSummaryApi<ValueType> | undefined);
    get api(): UmbValueSummaryApi<ValueType> | undefined;
    protected _value?: ValueType;
}